Thanks for the replies chaps, Looks like ill go for the cheaper OEM ones then.
I know they're not quite as good "guards" as some of the barkbuster options, I would be using them mostly as wind deflectors (/Car mirror deflectors).
I will stick with the OEM as I know where I stand with those at least! I'm a bit disappointed as the Givi stuff is usually extremely good! I have a Givi sumpguard and crash bars (and apart from fitting) are very good! - and numerous top boxes...